CVE-2019-9511

HIGH LAB

HTTP/2 - DoS

Title source: llm
STIX 2.1

Description

Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a large amount of data from a specified resource over multiple streams. They manipulate window size and stream priority to force the server to queue the data in 1-byte chunks. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

Exploits (2)

nomisec SCANNER
by harley-ghostie · poc
https://github.com/harley-ghostie/CVE-2019-9511_Priority-Churn-Data-Dribble
nomisec WORKING POC
by flyniu666 · poc
https://github.com/flyniu666/ingress-nginx-0.21-1.19.5

References (47)

Core 47
Core References
Third Party Advisory, US Government Resource third-party-advisory x_refsource_cert-vn
https://kb.cert.org/vuls/id/605641/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4099-1/
Mailing List, Third Party Advisory mailing-list x_refsource_bugtraq
https://seclists.org/bugtraq/2019/Aug/40
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2019/dsa-4505
Mailing List, Third Party Advisory mailing-list x_refsource_bugtraq
https://seclists.org/bugtraq/2019/Sep/1
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2019/dsa-4511
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2692
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00035.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2745
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2746
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2775
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2799
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2925
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2939
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2949
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00003.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00005.html
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2955
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2966
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00014.html
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:3041
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:3933
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:3935
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:3932
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:4018
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:4019
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:4021
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:4020
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2020/dsa-4669
Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpuoct2020.html
Third Party Advisory x_refsource_confirm
https://www.synology.com/security/advisory/Synology_SA_19_33
Third Party Advisory x_refsource_confirm
https://support.f5.com/csp/article/K02591030
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20190823-0002/
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20190823-0005/
Third Party Advisory x_refsource_confirm
https://kc.mcafee.com/corporate/index?page=content&id=SB10296
Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpujan2021.html

Scores

CVSS v3 7.5
EPSS 0.1395
EPSS Percentile 94.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Lab Environment

COMMUNITY
Community Lab
docker pull quay.io/kubernetes-ingress-controller/nginx:0.70

Details

CWE
CWE-770 CWE-400
Status published
Products (28)
apache/traffic_server 6.0.0 - 6.2.3
apple/swiftnio 1.0.0 - 1.4.0
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
canonical/ubuntu_linux 19.04
debian/debian_linux 9.0
debian/debian_linux 10.0
f5/nginx 1.9.5 - 1.16.1
fedoraproject/fedora 29
fedoraproject/fedora 30
... and 18 more
Published Aug 13, 2019
Tracked Since Feb 18, 2026